165303 has 6 divisors (see below), whose sum is σ = 238784. Its totient is φ = 110196.

The previous prime is 165293. The next prime is 165311. The reversal of 165303 is 303561.

It is not a de Polignac number, because 165303 - 2⁴ = 165287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165313) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9175 + ... + 9192.

2¹⁶⁵³⁰³ is an apocalyptic number.

165303 is a deficient number, since it is larger than the sum of its proper divisors (73481).

165303 is a wasteful number, since it uses less digits than its factorization.

165303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18373 (or 18370 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 165303 is about 406.5747163806. The cubic root of 165303 is about 54.8816186585.

Adding to 165303 its reverse (303561), we get a palindrome (468864).

It can be divided in two parts, 16 and 5303, that multiplied together give a palindrome (84848).

The spelling of 165303 in words is "one hundred sixty-five thousand, three hundred three".